* {
  margin: 0;
  padding: 0;
}
body {
  width: 100%;
  height: 100%;
}
.change {
  position: absolute;
  width: 1000px;
  height: 500px;
  top: 50%;
  left: 50%;
  margin-top: -250px;
  margin-left: -400px;
  /* box-shadow: 0 0 5px rgba(0, 0, 0, 0.5); */
}
.change .change_usr {
  width: 450px;
  height: 500px;
  /* background-color: #bfa; */
  position: relative;
  float: left;
}
.change .change_usr span{
  display: block;
  position: relative;
  text-align: center;
  font-size: 30px;
  margin-top: 15px;
}
.change .change_usr input{
  position: relative;
  left: 50%;
  margin-left: -170px;
  width: 300px;
  height: 60px;
  font-size: 20px;
  padding: 0 16px;
  margin-top: 15px;
  border: 2px solid rgb(150, 150, 150);
  outline: none;
}
.change .change_usr .button{
  position: relative;
  width: 150px;
  height: 60px;
  border-radius: 25%;
  left: 50%;
  margin-top: 40px;
  margin-left: -75px;
  background-color: rgb(150, 150, 150);
  border: none;
  outline: none;
  font-size: 25px;
  /* 移入变手形 */
  cursor: pointer;
}
.change .change_usr .tips_usr{
  position: relative;
  display: block;
  color: red;
  font-weight: bold;
  font-size: 20px;
  text-align: center;
  margin-top: 25px;
}



.change .change_pwd {
  width: 450px;
  height: 500px;
  /* background-color: skyblue; */
  position: relative;
  float: right;
}
.change .change_pwd span{
  display: block;
  position: relative;
  text-align: center;
  font-size: 30px;
  margin-top: 15px;
}
.change .change_pwd input{
  position: relative;
  left: 50%;
  margin-left: -170px;
  width: 300px;
  height: 60px;
  font-size: 20px;
  padding: 0 16px;
  margin-top: 15px;
  border: 2px solid rgb(150, 150, 150);
  outline: none;
}
.change .change_pwd .button{
  position: relative;
  width: 150px;
  height: 60px;
  border-radius: 25%;
  left: 50%;
  margin-top: 40px;
  margin-left: -75px;
  background-color: rgb(150, 150, 150);
  border: none;
  outline: none;
  font-size: 25px;
  /* 移入变手形 */
  cursor: pointer;
}
.change .change_pwd .tips_pwd{
  position: relative;
  display: block;
  color: red;
  font-weight: bold;
  font-size: 20px;
  text-align: center;
  margin-top: 25px;
}
.change .change_pwd .tip{
  position: relative;
  display: block;
  float: right;
  margin-top: 12px;
  font-size: 13px;
}